/* Leoncito dashboard — dark/light themes, blues/teals, cat glucose zones. */

:root {
  --bg: #0b1220;
  --bg-card: #101a2e;
  --bg-card-2: #16233c;
  --text: #e6edf6;
  --text-muted: #8fa3bf;
  --border: #223253;
  --accent: #2dd4bf;        /* teal */
  --accent-2: #38bdf8;      /* sky */
  --hypo: #f43f5e;          /* red */
  --low: #fb923c;           /* orange */
  --target: #34d399;        /* green */
  --high: #facc15;          /* yellow */
  --radius: 14px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-2: #e8f0f8;
    --text: #0f172a;
    --text-muted: #52627a;
    --border: #d5e0ee;
    --accent: #0d9488;
    --accent-2: #0284c7;
    --hypo: #e11d48;
    --low: #ea580c;
    --target: #16a34a;
    --high: #ca8a04;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.site-header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--accent);
  letter-spacing: -0.02em;
}

.tagline { color: var(--text-muted); margin: 0.3rem 0 0; }

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
  display: grid;
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

/* Metric cards */
.metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

@media (max-width: 760px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
}

.metrics .card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
}

.metric-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.metric-value {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent-2);
}

.metric-value--sm { font-size: 1.05rem; color: var(--text); }

.metric-unit { font-size: 0.9rem; color: var(--text-muted); }

.metric-status { font-size: 0.85rem; }

/* value-colour helpers set by JS */
.value-hypo  { color: var(--hypo) !important; }
.value-low   { color: var(--low) !important; }
.value-target{ color: var(--target) !important; }
.value-high  { color: var(--high) !important; }

/* F2: Time in Range */
.tir-summary h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  color: var(--text);
}

.tir-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (max-width: 600px) {
  .tir-grid { grid-template-columns: repeat(2, 1fr); }
}

.tir-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  background: var(--bg-card-2);
  border-radius: 10px;
  text-align: center;
}

.tir-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.tir-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.tir-value-target { color: var(--target); }
.tir-value-low { color: var(--low); }
.tir-value-hypo { color: var(--hypo); }
.tir-value-high { color: var(--high); }

.tir-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .tir-stats { grid-template-columns: repeat(2, 1fr); }
}

.tir-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: center;
}

.tir-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.tir-stat-value {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-2);
}

/* F3: Sensor Life */
.sensor-life h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  color: var(--text);
}

.sensor-life-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

@media (max-width: 600px) {
  .sensor-life-grid { grid-template-columns: repeat(2, 1fr); }
}

.sensor-life-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  background: var(--bg-card-2);
  border-radius: 10px;
  text-align: center;
}

.sensor-life-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.sensor-life-value {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
}

/* Chart card */
.chart-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.tabs {
  display: inline-flex;
  gap: 0.25rem;
  background: var(--bg-card-2);
  border-radius: 10px;
  padding: 0.25rem;
}

.tab {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  cursor: pointer;
}

.tab:hover { color: var(--text); }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.tab[aria-selected="true"] {
  background: var(--accent);
  color: #06281f;
  font-weight: 600;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-card-2);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  cursor: pointer;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.chart-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 280px;
}

.chart-wrap canvas { width: 100% !important; height: 100% !important; }

.chart-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text-muted);
}

/* Legend */
.legend {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.legend-item::before {
  content: "";
  display: inline-block;
  width: 0.7em;
  height: 0.7em;
  border-radius: 3px;
  margin-right: 0.4em;
  vertical-align: baseline;
}

.legend-hypo::before   { background: var(--hypo); }
.legend-low::before    { background: var(--low); }
.legend-target::before { background: var(--target); }
.legend-high::before   { background: var(--high); }

/* F4: Event Legend */
.event-legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.legend-title {
  font-weight: 600;
  color: var(--text);
}

.legend-item.event-food::before   { background: #34d399; }
.legend-item.event-insulin::before { background: #f472b6; }
.legend-item.event-note::before   { background: #60a5fa; }

/* NID-402: Insulin-shot tracker */
.insulin-card h2 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text);
}

.insulin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.insulin-actions { display: flex; gap: 0.5rem; }

.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #06281f;
  font-weight: 600;
}

.btn-primary:hover { color: #06281f; filter: brightness(1.1); }

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  filter: none;
}

.btn:disabled { cursor: not-allowed; opacity: 0.45; }
.btn-primary:disabled:hover { color: #06281f; border-color: var(--accent); }

.calendar-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.cal-month { font-weight: 600; }

.calendar-nav .btn { padding: 0.25rem 0.75rem; font-size: 1rem; line-height: 1.2; }

.cal-weekdays,
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-weekdays span {
  text-align: center;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding-bottom: 0.25rem;
}

.cal-cell {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card-2);
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.3rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.15rem;
  cursor: pointer;
  appearance: none;
}

.cal-cell:hover { border-color: var(--accent); }

.cal-pad { background: transparent; border-color: transparent; cursor: default; }
.cal-pad:hover { border-color: transparent; }

.cal-today .cal-day-num { color: var(--accent-2); font-weight: 700; }

.cal-selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 18%, var(--bg-card-2));
}

.cal-shot-badge {
  font-size: 0.68rem;
  background: rgba(244, 114, 182, 0.18);
  border-radius: 6px;
  padding: 0 0.25rem;
}

.insulin-day { margin-top: 1rem; }

.insulin-day h3 { margin: 0 0 0.5rem; font-size: 0.95rem; color: var(--text-muted); }

.shot-list {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.shot-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
}

.shot-time { font-weight: 700; color: #f472b6; }

.shot-note { color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.shot-deleted { opacity: 0.45; text-decoration: line-through; }

.shot-empty { color: var(--text-muted); font-size: 0.9rem; }

.shot-delete {
  margin-left: auto;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
}

.shot-delete:hover { color: var(--hypo); background: rgba(244, 63, 94, 0.12); }
.shot-delete:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.shot-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.shot-form label { font-size: 0.85rem; color: var(--text-muted); }

.shot-form input[type="time"],
.shot-form input[type="text"] {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.4rem 0.55rem;
}

.shot-form input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.shot-form input[type="text"] { flex: 1; min-width: 140px; }

.insulin-status {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  min-height: 1em;
}

.legend-item.event-tracker-shot::before { content: none; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Status card */
.status-card p { margin: 0.25rem 0; color: var(--text-muted); font-size: 0.9rem; }

.disclaimer {
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  margin-top: 0.75rem !important;
}

.site-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 1rem;
}